Overview

Features and Benefits

  • 4.5V to 28V Input Voltage Range
  • 250kHz/500kHz Current-Mode Step-Down Converter
    • Small Inductor/Capacitors
    • No Sense Resistor
  • Three Positive Linear Regulator Controllers
    • One Positive and One Negative Additional Controller (MAX1531)
    • Small Input and Output Capacitors
  • Timed Reset Output
  • Uncommitted Overcurrent Protection (MAX1531)
  • Soft-Start for All Regulators
  • Programmable Input Undervoltage Comparator
  • Programmable Startup Sequencing

Product Details

The MAX1530/MAX1531 multiple-output power-supply controllers generate all the supply rails for thin-film transistor (TFT) liquid-crystal display (LCD) monitors. Both devices include a high-efficiency, fixed-frequency, step-down regulator. The low-cost, all N-channel, synchronous topology enables operation with efficiency as high as 93%. High-frequency operation allows the use of small inductors and capacitors, resulting in a compact solution. The MAX1530 includes three linear regulator controllers and the MAX1531 includes five linear regulator controllers for supplying logic and LCD bias voltages. A programmable startup sequence enables easy control of the regulators.

The MAX1530/MAX1531 include soft-start functions to limit inrush current during startup. An internal step-down converter current-limit function and a versatile overcurrent shutdown protect the power supplies against fault conditions. The MAX1530/MAX1531 use a current-mode control architecture, providing fast load transient response and easy compensation. An internal linear regulator provides MOSFET gate drive and can be used to power small external loads.

The MAX1530/MAX1531 can operate from inputs as high as 28V and are well suited for LCD monitor and TV applications running directly from AC/DC wall adapters. Both devices are available in a small (5mm x 5mm), ultra-thin (0.8mm), 32-pin QFN package and operate over the -40°C to +85°C temperature range.

Applications

  • LCD Monitors and TVs

Product Categories

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Evaluation Kits (1)

Product Recommendations

MAX1530 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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